diff --git a/lib/src/localization.dart b/lib/src/localization.dart
index dc5fa224..2f320f1b 100644
--- a/lib/src/localization.dart
+++ b/lib/src/localization.dart
@@ -22,7 +22,9 @@ class Localization {
   Localization();
 
   static Localization? _instance;
+
   static Localization get instance => _instance ?? (_instance = Localization());
+
   static Localization? of(BuildContext context) =>
       Localizations.of<Localization>(context, Localization);
 
@@ -108,9 +110,9 @@ class Localization {
     return res;
   }
 
-  static PluralRule? _pluralRule(String? locale, num howMany) {
+  static PluralRule _pluralRule(String? locale, num howMany) {
     startRuleEvaluation(howMany);
-    return pluralRules[locale];
+    return pluralRules[locale] ?? () => PluralCase.OTHER;
   }
 
   String plural(
@@ -135,7 +137,7 @@ class Localization {
         pluralCase = PluralCase.TWO;
         break;
       default:
-        pluralCase = pluralRule!();
+        pluralCase = pluralRule();
     }
     switch (pluralCase) {
       case PluralCase.ZERO:
diff --git a/pubspec.yaml b/pubspec.yaml
index a9b5f2f5..b37865bd 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -8,18 +8,18 @@ issue_tracker: https://github.com/aissat/easy_localization/issues
 version: 3.0.2-dev.5
 
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=3.0.0 <4.0.0'
 
 dependencies:
+  args: ^2.4.0
+  easy_logger: ^0.0.2
   flutter:
     sdk: flutter
-  shared_preferences: '>=2.0.0 <3.0.0'
-  intl: '>=0.17.0-0 <=0.17.0'
-  args: ^2.3.1
-  path: ^1.8.1
-  easy_logger: ^0.0.2
   flutter_localizations:
     sdk: flutter
+  intl: ^0.18.0
+  path: ^1.8.2
+  shared_preferences: ^2.1.0
 
 
 dev_dependencies: